Home / 790,910.40-1,091,476.37-485,155.38

Finding the Fourth Proportional to 790,910.40, 1,091,476.37 and 485,155.38

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Solution

The fourth proportional to 790,910.40, 1,091,476.37 and 485,155.38 is: 669,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,910.40 : 1,091,476.37 = 485,155.38 : x
  2. Step 2: Convert to fraction form
    790,910.40/1,091,476.37 = 485,155.38/x
  3. Step 3: Cross multiply
    790,910.40x = 1,091,476.37 × 485,155.38
  4. Step 4: Simplify right side
    790,910.40x = 529,535,630,622.59
  5. Step 5: Solve for x
    x = 529,535,630,622.59/790,910.40
  6. Step 6: Final answer
    x = 669,526.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.